
PCA9515D
I2C-bus repeater
The PCA9515 is a BiCMOS integrated circuit intended for application in I²C-bus and SMBus systems.
While retaining all the operating modes and features of the I²C-bus system, it permits extension of the I²C-bus by buffering both the data (SDAn) and the clock (SCLn) lines, thus enabling two buses of 400 pF.
The I²C-bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the PCA9515 enables the system designer to isolate two halves of a bus, thus more devices or longer length can be accommodated. It can also be used to run two buses, one at 5 V and the other at 3.3 V or a 400 kHz and 100 kHz bus, where the 100 kHz bus is isolated when 400 kHz operation of the other is required.
Two or morePCA9515s cannot be put in series.The PCA9515 design does not allow this configuration. Since there is no direction pin, slightly different 'legal' low voltage levels are used to avoid lock-up conditions between the input and the output. A 'regular low' applied at the input of a PCA9515 will be propagated as a 'buffered low' with a slightly higher value. When this 'buffered low' is applied to another PCA9515, PCA9516A, or PCA9518A in series, the second PCA9515, PCA9516A, or PCA9518A will not recognize it as a 'regular low' and will not propagate it as a 'buffered low' again. The PCA9510A/9511A/9513A/9514A and PCA9512A cannot be used in series with the PCA9515, PCA9516A, or PCA9518A but can be used in series with themselves since they use shifting instead of static offsets to avoid lock-up conditions.
The PCA9515 SCLn/SDAn Ci is about 200 pF versus the normal < 10 pF when VCC= 0 V. The newer PCA9515A should be used in applications where power is secured to the repeater but an active bus remains on either set of SCLn/SDAn pins to prevent this increase in bus loading. Additionally, the PCA9515A has a wider voltage range of 2.3 V to 3.6 V and can be used in applications with lower voltage supply constraints.
1. The maximum system operating frequency may be less than 400 kHz because of the delays added by the repeater.
| Type number | Package | I2C-bus(kHz) | Operating voltage(VDC) | Inputs | Outputs | Operating Temperature(Cel) |
|---|---|---|---|---|---|---|
| PCA9515D | SOT96-1 (SO8) | 400 | 3.0~3.6 tolerant to 5.5 | 1 | 1 | -40~85 |
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking |
|---|---|---|---|---|---|---|
| PCA9515D | PCA9515D,112 | 9352 686 51112 | Volume production | SOT96-1 (SO8) | Tube | PCA9515 |
| PCA9515D | PCA9515D,118 | 9352 686 51118 | Volume production | SOT96-1 (SO8) | Tape reel smd | PCA9515 |
| Package Version | Package Name | Package Description | Reference Codes | Issue Date |
|---|---|---|---|---|
| SOT96-1 | SO8 | plastic small outline package; 8 leads; body width 3.9 mm | MS-012 (JEDEC); 076E03 (IEC); | 2003-02-18 |
| Type number | Orderable part number | Chemical content | RoHS | Leadfree conversion date | RHF | IFR (FIT) | MTBF (hours) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|
| PCA9515D | PCA9515D,112 | PCA9515D | week 5, 2005 | 3.0 | 3.333333333333333E8 | 1 | 1 | ||
| PCA9515D | PCA9515D,118 | PCA9515D | week 5, 2005 | 3.0 | 3.333333333333333E8 | 1 | 1 |
| File name | Title | Type | Format | Date |
|---|---|---|---|---|
| PCA9515 | I2C-bus repeater | Data sheet | 2009-04-23 | |
| AN10441 | Level shifting techniques in I2C-bus design | Application note | 2007-06-20 | |
| AN10216 | I2C manual | Application note | 2003-03-27 | |
| AN10146 | I2C 2002-1A Evaluation Board | Application note | 2003-02-26 | |
| AN255 | I2C / SMBus Repeaters, Hubs and Expanders | Application note | 2002-12-19 | |
| AN262 | PCA954X FAMILY OF I²C / SMBus MULTIPLEXERS and SWITCHES | Application note | 2004-10-01 | |
| 75016531 | Evaluate the I2C-bus with a comprehensive kit; NXP I2C 2002-1A evaluation board kits OM6285 and OM6278 | Leaflet | 2008-07-01 | |
| 75016532 | Extend the I2C-bus with advanced repeaters and hubs; NXP 2-channel I2C-bus repeaters PCA9515x and 5-channel I2C-bus hubs PCA9516x | Leaflet | 2008-07-01 | |
| 75017144 | I2C Selection Guide 2H 2011 | Leaflet | 2011-09-29 | |
| design_con_2003_tecforum_i2c_bus_overview | DesignCon 2003 TecForum I 2 C Bus Overview | Other type | 2003-01-27 | |
| 39340011 | I2C-bus specification (version 2.1) | Other type | 2000-01-01 | |
| UM10204 | I2C-bus specification and user manual | User manual | 2007-06-26 | |
| UM10206 | I2C Demonstration Board 2005-1 Quick Start Guide | User manual | 2006-06-13 | |
| UM10323 | PCA9600 demonstration board OM6293 | User manual | 2008-12-15 | |
| UM10204_JA | I2C-bus specification and user manual | User manual | 2013-04-03 |
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